Eraser.



PATENTED NOV, 24, 1903.

H. B. TOOKER.

ERASER.

APPLIUATION FILED APE. I3. 1903.

'NO MODEL.

w T m V N WITNESSES.

A TTORNE Y8 No. 745,0se.

lhnirnn IPatented November 24:, 1903.

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ERASER.

SPEGIFIGA TION forming part of Letters Patent No. 745,084, dated November 24, 1903.

Application filed April 13. 1903. b'erial No- 152,390. (No Inorlelh To all whom it may concern.-

Be it known that I, HARRY BATEMAN TOOKER, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Eraser, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved mechanical eraser, more especially designed for use on typewriting machines and arranged to enable the operator to quickly and accurately erase either a single letter, sign, or the like or a Word or entire line without danger of inarring the remaining writing or injuring; the paper.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of theinvention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective View of the improvement. Fig. 2 is an enlarged crosssection of the same, and Fig. 3 is a sectional side elevation of the same on the line 3 3 in Fig. 2.

On a suitably-constructed casing A'is secured one end of a shield B of flexible material, such as sheet metal, celluloid, or the'like, and in the said shield B is formed an opening or recess B opposite the peripheral face of an erasing-disk O, of rubber or other material, secured on a shaft D, mounted to turn in suitable bearings carried or formed on the casing A. Normally the shield B extends away from the opposite side of the casing A as well as away from the erasing-disk C; but when the device is used and the shield B is placed on the paper on the platen of the type-writing machine and a slight inward pressure is given to the casing A then the peripheral surface of the erasing-disk O registers with the opening B, and when the disk is now rotated the letter within the opening B is erased without touching the adjacent letter.

Now in order to impart a rotary motion to the disk 0 the following device is provided: On the shaft D, Within the casing A, is secured one end of a coil-spring E, fastened at its other end to the interior of the casing A, as plainly shown in Fig. 2, and on the said shaft, also within the casing A, is secured a drum F,on which winds a tape G, extending at its outer end through an opening A,forrned in the rim of the casing. On the outer terminal of the tape G is secured a handle G, adapted to be taken hold of by the operator to alternately pull and release the handle Or, it being understood that on pulling the bandle G the tape G unwinds, and thereby rotates the drum F and shaft D, whereby the was ing-disk O is rotated in one direction and at the same time the coil-spring E is wound up. Now when the outward pull on the handle G ceases then the coil-spring E in uncoiling rotates the shaft D in the opposite direction, thus rotating the erasingdisk O backward and with it the drum F to wind up the tape G. Now by the operator alternately pulling and releasing the tape a forward-and-hackward rotary motion is given to the disk 0 to quickly erase the latter on the paper held on the platen of the type-writing machine. As soon as the operator releases the pressure on the casing A then the resiliency of the shield B causes a return movement of the casing A and the erasing-disk O to move the latter out of engagement with the opening B and away from the paper on the platen.

On the end of the shield B, attached to the casing, is arranged a guideway B adapted to engage the bar of the type-writing machine in front of the platen, so as to allow of conveniently sliding the casing A and its shield B longitudinally on the said bar to bring the apparatus in proper position at the particular part on which the device is to be used, as above explained.

When it is desired to erase more than one letter or a word or an entire line, then it is only necessary for the operator to move the casing to the right and to the left along the bar, at the same time rotating the disk 0 and holding the casinginward sufficiently to bring the peripheral surface of the disk in contact with the paper at the opening B.

A sheet of Writing can be placed in the type-writing machine, and by setting the eraser 0n the platen and turning the paper so that the letter to be erased is opposite the opening 13' then the letter can be erased by manipulating the device as above described, and then another letter can be struck in the same place by the type-bars, so that the correction can hardly be detected. It, will further be seen that by having the opening B at or near one edge of the shield B the operator is enabled to readily see when the letter to be erased is in register with the opening.

The device is very simple and durable in construction, can be cheaply manufactured, and is not liable to easily get out of order.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. An eraser for use on type-writing machines, comprising a casing, a flexible shield thereon, having an opening, an erasing-disk mounted to turn on the said casing and having'its peripheral face opposite the said opening, and means for imparting a rotary motion to the erasing-disk, as set forth.

2. An eraser for use on type-writing machines, comprising a casing, a-flexible curved shield having an opening and having one end secured to the'said casing, the attached end being provided with a guideway for engaging a bar on the type-writing machine, in front of the platen, an erasing-disk mounted to turn on the said casing and having its peripheral face opposite the said opening, and means for imparting a rotary motion to the erasing-disk, as set forth.

3. An eraser for use on type-writing machines, comprisinga casing, a shaft journaled in the said casing, aspring secured at one end to the said shaft, within the said casing, the other end of the spring being fastened to the casing, an erasing-disk secured on the shaft, outside of the said casing, a flexible shield on the outside of the casing, having an opening opposite the peripheral face of the said disk, a drum secured on the said shaft, within'the casing, and a tape winding on the said drum and extending to the outside of the casing, to be under the cont-r01 of the operator, as set forth.

4. An. eraser for use on typewriting machines, comprising a casing, a shaft journaled in the said casing, a spring secured at one end to the said shaft, within the said casing, the other end of the spring being fastened to the casing, an erasing-disk secured on the shaft, outside of the said casing, a flexible shield on the outside of the casing, having an opening opposite the peripheral face of the said disk, a drum secured on the said shaft, within the casing, a tape winding on the said drum and extending to the outside of the casing, to be under the control of the operator, and a guideway on the said shield, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HARRY BATEMAN TOOKER.

Witnesses:

THEO. G. HOSTER, JNo. M. BITTER. 

